When the Settlor Dies, the Tax Clock Starts

A US trust is created. The settlor is alive, the beneficiaries are named, and the structure sits comfortably in the opaque category under Art. 73, paragraph 2 of the TUIR. Income accumulates inside the trust. Italian-resident children wait. The plan is coherent: inheritance or donation tax on the capital at final distribution, no Italian income tax in the meantime. Then the settlor dies.

The Italian Revenue Agency, in Interpello Answer No. 239/2025 dated 15 October 2025, has made clear that death is not merely a succession event. It is a reclassification trigger. Once beneficiaries acquire what the Agency considers a predetermined right to residual assets, the trust flips from opaque to fiscally transparent, regardless of how it is characterised under US law. From that moment, trust income is imputed pro-rata to Italian-resident beneficiaries as it arises. The bill arrives before any distribution is made.

The planning assumption that opaque status is a durable feature of a trust's life, chosen at inception and stable thereafter, is the assumption this ruling dismantles.

The Moment the Structure Changes Shape

The ruling's mechanism is precise, and its precision is what makes it consequential. The Agency does not look at the trust deed's label or at US state law. It looks at economic substance: do the beneficiaries hold a sufficiently defined entitlement to the residual assets? If the answer is yes, the classification flips. The trust that was opaque yesterday becomes transparent today, and the Italian-resident beneficiaries become current taxpayers on income they have not yet received.

For families in a post-death liquidation phase, which can run for several years in a complex US estate, this means annual IRPEF filings on imputed income throughout the wind-down period. Beneficiaries who budgeted for a single inheritance tax event at the end now face a concurrent income tax obligation they cannot fund from the trust itself without risking further complications. The cash-flow problem is immediate. The compliance obligation is immediate. Neither was in the original plan.

One hard limit is worth naming. An interpello answer binds the Agency only in relation to the specific taxpayer who requested it. A trust deed with different language around beneficiary entitlement may or may not meet the "predetermined" threshold. The Agency retains discretion on that assessment, and that discretion is not self-defining. What the ruling establishes as a principle, it does not establish as a bright line. Each structure must be evaluated against its own documents.

The Double-Count That Advisers Miss

The income and capital charges are not sequential. They are concurrent. IRPEF applies to trust income as it arises during the liquidation period. Inheritance tax under Art. 4-bis TUS applies to capital at final distribution. These are two separate obligations running in parallel, and the failure to model them simultaneously is where the planning mathematics breaks down.

Advisers who treat the income phase and the capital phase as a clean hand-off, one ending before the other begins, risk presenting clients with a total tax cost that is wrong in either direction. Understate the IRPEF exposure and the client is underfunded. Overstate it by double-counting the same euros as both income and capital and the client may make decisions based on a liability that does not exist in that form. The income/capital split is real and legally meaningful; it is the failure to model both sides simultaneously that creates the distortion.

This is unambiguously bad news for one specific group: Italian-resident beneficiaries of US trusts that have already passed through a settlor's death without revisiting the classification question. For them, IRPEF liability accrues from the reclassification event, not from the date they become aware of the ruling. The exposure is not prospective. It is already accumulating.

US families with Italian-resident children named in trust documents should assume that any wind-down phase following a settlor's death will attract Italian scrutiny on exactly this question. The trust's characterisation under US law will not be the Agency's starting point. The economic substance of the beneficiaries' entitlement will be.

The settlor spent years building a structure designed to pass wealth cleanly across a generation. The ruling does not undo that intention. It inserts a tax event into the interval between death and distribution, an interval that the original planning may never have examined at all. That interval, it turns out, is where the Italian Revenue Agency has been waiting.

If you want to know more, contact us at info@italiainvested.com.